Q

QuestionAnatomy and Physiology

The structure of an atom is best described as a nucleus surrounded by an electron cloud (Option B). This model, known as the Bohr model or the quantum mechanical model, takes into account the wave-like properties of electrons and explains the atomic structure more accurately than the other options.

A. A solid ball of protons, neutrons, and electrons - This option assumes that all atomic particles are tightly packed together, which is not the case. Electrons exist in a cloud-like region surrounding the nucleus due to their wave-like properties. C. A nucleus surrounded by electrons in set orbits - This option is a more traditional description of the atom, based on the Rutherford model. However, it does not accurately represent the quantum mechanical behavior of electrons, which do not follow set orbits but rather exist in probability clouds. D. A core of protons surrounded by an electron cloud - This option is similar to Option B but incorrectly identifies the nucleus as the "core" of the atom. The term "core" is not commonly used to describe the nucleus in atomic structure discussions.